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Tachycardia
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<p>Tachycardia, also called tachyarrhythmia, is a <a href="/facts/Heart_rate/YngB0bzg">heart rate</a> that exceeds the <a href="/facts/Heart_rate/YngB0bzg">normal resting rate</a>. In general, a resting heart rate over 100 <a href="/facts/Pulse/Bg8EUcWL">beats</a> per minute is accepted as tachycardia in adults. Heart rates above the resting rate may be normal (such as with <a href="/facts/Exercise/egYQjt8A">exercise</a>) or abnormal (such as with electrical problems within the heart). </p>